Research Unit in Clinical Biomechanics (UBIC), Department of Physiotherapy, Faculty of Physiotherapy, University of Valencia, 46010 Valencia, Spain.
Strength Training and Neuromuscular Performance Research Group (STreNgthP), Faculty of Health, Camilo José Cela University, 28692 Madrid, Spain.
Int J Environ Res Public Health. 2023 Feb 16;20(4):3515. doi: 10.3390/ijerph20043515.
Ischemic preconditioning (IPC) has shown positive effects in endurance-type sports among healthy young individuals; however, its effects in endurance-type exercises in older adults have not been explored. We aimed to examine the acute effects of a single session of IPC prior to an endurance-type exercise on cardiovascular- and physical-function-related parameters in sedentary older adults. A pilot study with a time-series design was carried out. Nine participants were enrolled consecutively in the following intervention groups: (i) SHAM (sham IPC + walking) and (ii) IPC (IPC + walking) groups. The main outcomes were resting systolic (SBP) and diastolic (DBP) blood pressure, heart rate (HR), peripheral oxygen saturation (SpO), maximum isometric voluntary contraction (MIVC), endurance performance, and perceived fatigue. After the intervention, the IPC group showed a significant reduction in SBP, whereas SpO decreased in the SHAM group. The IPC group maintained quadriceps MIVC levels, whereas these levels dropped in the SHAM group. No changes in DBP, resting HR, endurance, or fatigue in any group were observed. These findings are of interest for the promotion of cardiovascular and physical health in older people.
缺血预处理 (IPC) 在健康年轻个体的耐力型运动中显示出积极的效果；然而，其在老年耐力型运动中的效果尚未得到探索。我们旨在研究单次 IPC 预处理对久坐老年个体耐力型运动相关心血管和身体功能参数的急性影响。采用时间序列设计进行了一项初步研究。连续纳入了 9 名参与者，分为以下干预组：（i）SHAM（假 IPC+行走）和（ii）IPC（IPC+行走）组。主要结局为静息收缩压（SBP）和舒张压（DBP）、心率（HR）、外周血氧饱和度（SpO）、最大等长随意收缩（MIVC）、耐力表现和疲劳感。干预后，IPC 组 SBP 显著降低，而 SHAM 组 SpO 降低。IPC 组股四头肌 MIVC 水平保持不变，而 SHAM 组则下降。任何组的 DBP、静息 HR、耐力或疲劳均未发生变化。这些发现对促进老年人的心血管和身体健康具有重要意义。
